D/W R09
D/W Series Stainless Steel Miniature Bearings
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D/W R09 Bearing Product Overview & Core Advantages
The D/W R09 is a precision miniature ball bearing designed for applications demanding high reliability in compact spaces. As a single row, deep groove ball bearing in an open configuration, it is optimized for radial loads and offers smooth, low-friction operation. Manufactured entirely from stainless steel, it provides excellent corrosion resistance. Its ultra-small bore diameter of 0.04" and lightweight design make it an ideal solution for high-speed, miniature electromechanical assemblies where precision and durability are critical.
D/W R09 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| D/W | Manufacturer's prefix (Diamond / WSB) |
| R09 | The specific bearing series and size designation. |
| Open (Implied) | No seals or shields, allowing for higher limiting speeds and easy re-lubrication, but requiring a clean operating environment. |
| None (Lubrication) | The bearing is supplied without lubrication, providing flexibility for the user to apply a specialized grease or oil suited to the specific application. |
D/W R09 Bearing Structural Features & Performance Benefits
- All-Stainless-Steel Construction: The rings, balls, and stainless steel cage offer superior corrosion resistance, making the bearing suitable for harsh environments and ensuring long-term operational integrity.
- High-Speed Capability: The open design and precision P0 tolerance class minimize friction and heat generation, enabling a high limiting speed of 150,000 rpm.
- Precision & Stability: Manufactured to standard CN radial internal clearance and tight dimensional tolerances, this bearing ensures smooth running and precise rotational accuracy.
- Compact & Lightweight: With an outside diameter of just 0.125" and a weight of only 4.0E-5 kg, it is engineered for space-constrained and weight-sensitive applications.
D/W R09 Bearing Typical Application Areas
The D/W R09 miniature bearing is ideally suited for a wide range of high-precision, small-scale equipment, including:
- Small Precision Motors and stepper motors
- Medical Devices and surgical hand tools
- Optical Encoders and instrumentation
- RC Models and drones
- Office automation equipment such as small printers and scanners
